#define _CRT_SECURE_NO_WARNINGS
#include"stdio.h"
int main() {
	int n = 0;
	scanf("%d", &n);
	for (int i = 1; i<=n; i++) {
		for (int j = 1; j <=n-i; j++) {
			printf(" ");
		}
		for (int k = 1; k <= 2*i-1; k++) {
			printf("*");
		}
		printf("\n");
	}
	for (int i = 1; i <n; i++) {
		for (int j = 1; j <= i; j++) {
			printf(" ");
		}
		for (int k = 1; k <= 2*(n-i-1)+1; k++) {
			printf("*");
		}
		printf("\n");
	}
	return 0;
}